Metallurgic converter.



W. H. PEI'RCE. METALLURGIG CONVERTER.

AIPLIOATION FILED NOV. 8, 1909.

944,905; Patented Dec. 28, 1909.

JP 2 SHEETS-SHEET 1 I l I I I I I l I I I I I I I I I I l I I I 1 I I I i I l I I I Patented D6028, 1909.

2 SHEETS-SHEET 2.

W. H. PEIROE. METALLURGIO CONVERTER. APPLICATION FILED NOV. 8 1909. 944,905.

WILLIAM H. PEIRCE, OF BALTIMORE, MARYLAND.

METALLURGIC convnnrnn.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Application filed November 8, 1909. Serial No. 526,863.

To all iohom it may concern:

Be it known that I, WILLIAM H. PEIRCE,

, a citizen of the United States, and a resident of the city of Baltimore and State of Maryland, have invented certain new and useful Improvements in Metallurgio Converters,

of which the following is a specification.

The improvement relates tometallurgic converters and more particularly to copper matte converters having an expansible, noncorrodible lining, such' as set forth in a i prior ap lication filed in the United States Patent ifice jointly by Elias A. C. Smith and myself, on July 13, 1908, Serial No. 38,286.

An acid converter lining of silica sand or finely ground ore expands but little. Moreover, such a lining unites with the iron present in the charge to form a slag so that it p Q quickly corrodesand is renewed after a few hours run. Ina basic, 'non-corrodible linmg, particularly when formed of brick, there 1s considerable expansion under the influence of the high heat developed during the course of treatment, and this expansion continues practically throughout the life of the' lining, which should last for several months. To prevent the disintegration of thelining or the rupture of the converter shell, provision must be made for permitting this expansion and heaving of the lining.

The present invention seeks to provide an improved construction in which the converter shell is provided witha head or headsshiftable relatively thereto in correspondence with the expansion of the lining. Means are provided tor connecting the head or phe'ads to the shell so that they assist in protecting and sustaining the lining and the burden of the charge, but the connections their ends,'to the shell by tie bolts. As the are adjustable or yielding to permit the Qmovementof the heads as the lining exands. The preferred form of the invention comprises a'cylindrical shell, rotatably sustained inhorizontal position, and having flanged heads telescopically engaging the ends of the shelhwvith cramp bars extending across the outer face of the heads and connected at lining expands, the tie bolts are slackened oif so-that the head may be forced outwardly.

To relieve the strain on theconnected parts,

in cas'edt becomes so great as to place in jeopardy the structural strength thereof, the

tic bolts are preferably provided with yield- 111g washers or equivalent devices.

In the drawings, which illustrate the pre- I ferred embodiment of the invention, Figure 1 1s a view partly 111 slde elevation and partly in longitudinal section of the con- The cylindrical metal shell 10 of the converter is provided with exterior, projecting rings '11 securely bolted or riveted thereto and resting on rollers 12 to support the convcrter and allow for its axial turn as may be requisite during the course of treatment to properly receive. the'matte and discharge. the slags, white metal or blister copper. The shell is preferably open at its upper side and the opposite sides of the opening are con- Iyet ed by tie rods 13. The rings 11, shown,

. are of I-shape in cross section, having inner and outer laterally projecting flanges 14 and 15, and two of the rings are arranged adjacent the ends of the shell. The circular metal heads 16 are provided with edge flanges 17 that extend within and telescopically engage the ends of the shell 10. In the form shown, the flanges 17 are formed of angle bars bent to circular form and rivcted to the heads 16. A number of parallel cramping bars 18 extend horizontally across the outer faces of the heads 16 and are arranged in vertical series one above the other from the top to the bottom of the heads. The ends of the cramping bars are connected t6 the shell by tie bolts 19. I

' In the construction shown, the bars 18 are formed of channel iron. They are not rigidly connected to the heads 16, but rest upon, pairs of L-shapcd supporting clips 20 that are'riveted t0 the outer faces of the heads. The tie bolts 19. extend through the vertical flanges of the channel bars 18 adjacent their ends and centrally through the webs of the end rings 11 on the shell. The outer threaded ends of the tie bolts are provided with nuts 21 which bear against the ends of the cramping bars 18. The inner headed ends preferably engage aseries of rectangular, wrought metal washers 22, arranged on the inner sides of the end rings 11 and the ends of which washers are seated on the inner and outer flanges 14 and 15 of the rings. Lugs 23 formed on these flanges engage the washers and hold them in position. The shell 10 and heads 16 are provided with an inner, continuous liningfla of noncorrodible basic material, arched over at the open top of the shell and preferably formed, at its more exposed portions, of magnesite brick luted with a cement composition (it ground magnesite and linseed or molders core oil.

When the converter is newly lined, the relatively shiftable heads are set well within the ends of the shell. The lining is free to expand relatively to the shell under the influence of the high heat developedin the use of the converter. As this expansion occurs,

the nuts 21 are slaekened from time to time to permit a corresponding outward move ment of theheads 16. The flanges 17 protect and support the lining at the joints between the ends of the shell and the relatively shii'table heads, as the latter move outwardly. The washers 22 are bridged across the flanges of the rings 11 and the heads at the inner ends of the tie bolts 19 centrally engage the washers. Befpre .the strain due to the expansion of the lining becomes sutli cient to rupture any of the parts, the washers will ield or bend between the flanges 14 and 15 ot the rings. When this occurs, the strain may be relieved by slackening the nuts 21. The heads are stoutly braced and held in position to support the lining and the burden of the furnace charge by the cramp bars and tie bolts, but in such a manner that the heads can move outwardly as the lining ex- 1 pands and before the strain is sutiicient to rupture the shell or any of the other parts. It is obvious that other yielding devices could be substituted for the washers 22 and that other changes in the details set forth could be made Without departure from the essentials'of the invention, as defined in t claims.

I claim as my invention 1. A metallurgic converter comprising a cylindrical shell provided with an expansible lining and with heads held in position tosupport the lining, but shiftable out wardly relatively to the shell in correspondonce with the expansion of the lining.

2. In a metallurgic converter, the .eombination with a cylindrical shell' haviiig an expans'ible lining, of a flanged. h'e'ad telescopically egaging said shell, and'means for adjustably connecting said .head to said shell to permit the outward movement'of the head as the lining expands. I

3. In a metallurgic converter, the combination with a cylindrical shell provided. with a lining free to ex and within the shell under the influence 0 high heat, of a head for the end of said shell and vielding connecan expansible tions between said head and said shell permitting the shift of said head relatively to the shell as the lining expands.

4. In a metallurgic converter, the combination with a cylindrical shell provided with a lmmg free to expand within the shell under the influence of high heat, of a flanged head telescopically engaging the end of said shellaand yielding, adjustable connections between said head and said shell permitting the outward movement of the head in correspondence with the expansion of the lining.

5. A metallurgic converter comprising a cylindrical shell rotatably sustained in horizontal position and open at its upper side, an inner, continuous lining arched over at the top and free to expand under. the infiuence. of heat, flan ed heads telescopically en aging the ends ot said shell, and adjustable, yielding connections between said heads and said shell, substantially as described.

-6: A metallurgic converter comprising a cylindrical shell, an inner, expansible, noneorrodible lining formed of brick, and heads adjustably eonected to said shell and rela tively shiftable thereto as the lining expands.

7 In a metallurgie converter, the combination with the converter shell having an inner expansible lining, of a head for said shell, cramp bars extending across said head, and connections between the ends of said cramp bars and said shell permitting the movement of said head relatively to the shell in correspondence with the expansion of the lining.

S. In a metallurgic converter, the combi nation with the converter shell having an inner expansible lining, of a flanged head telescopically engaging said shell, cram bars extending across said head, and yiel ing, adjustable ties between the ends of said cramp bars and said shell.

9. metallurgic converter comprising a cylindrical metal shell, a ring havmg inner and outer flanges secured to said shell adjacent its end, a relatively shiftable head tor the end of said shell, cramp bars extending across said head, tie-bolts extending through the ends of said cramp bars and through said ring, and yielding Washers extending across the flanges of said ring and engaging the inner ends of said bolts.

10. In a metallurgie converter, the eombi nation witha cylindrical shell provided with lining and having external rings secured thereto, rollers engaging said rings and supporting said shell in horizontal position, flanged heads telescopically engaging the ends of said shell, cramp bars extending across said heads, tie bots I ing through the ends of said bars and yieldingly connected at their inner ends to said rings.

extend-f 1. A inetallurgic converter comprising a eylimflrical shell rotatably sustained in horizontal position, and provided with an expansible lining, a yielding head for said shell having supporting ledges on its outer face, a series of horizontal cramping bars extending across the outer face of said head and resting on said ledges, and adjustable. yielding connections between the ends of said bars and said head.

12. A metallurgic eoverter con'iprising' a cylindrical shell open at its top and rotatabl y sustained in horizontal position, flanged heads telescopically engaging the ends of said shell, an inner, continuous, noncorrodiblc lining arched over at the top and free to expand under the influence of heat,-eran1p bars extending across the outer faces of said heads, and adjustable, yielding ties connecting the ends of said bars to said shell.

WILLIAH H. PE IRCE.

Witnesses:

H. H. ALEXANDER, Josnrn W. HUTTY. 

